Street-sweeping machine.



G. v. LEHEW.

STREET SWEEPING MACHINE..

' APPLICATION FILED SEPT- I5 I9I6. l Patentd May 7,19%.

' 5 SHEETS-SHEET I.

D33123333323123332mmnrmzwfb G. V. LEHEW.

Y mmm swfmms MACHINE.

n APPUCATION FILED SEPT. l5 1916. :i gag Patented May 7,1918.

5 SHEETS-SHEET 2.

G. V. LEHEW.

STREET SWEEPIMG MACHINE.

APPLICMIDN HLED SEPT. l5. 1916. I

f Pataned May 7, l98

5 SHEEIS-SHEET 3.

G. V. LEHEW.

STREET SWEEPING MACHINE.

APPLTCATTON FIL-ED SEPT. l5. 1916. I'ge Patented May y, ms.

5 SHEETS-SHEET 4.

Qi 'y Q' G. V. LEHEW.

STREET SWEEPING MACHINE.

APmcATloN man SEPT. 15. 1916.

:i 5,635, Patented May 7, 1918.

5 SHEETS-SHEET 5.

@hl-vamo@ GECRGE V. LEI-IEW, F XEON, OEO. y

sTREnT-swnnrrne MACHINE.

Specication of Letters Patent.

E'Patented May t, MMS..

Application iled September 15, 1916. Serial No. 120,392.

.To @Z3 whom may concern.'

Be it known that I, GEORGE V. LEHEW, a citizen of the United States, residing at Akron, in the county of Summit and State of Chio, have invented new and useful Improvements in Street-Sweeping Machines, of which the following is a specification.

'lhis invention relates to improvements street sweeping machines and has parolication to a motor driven street ne of the invention is to provide in a-moi'or driven machine carrying main and auxiliary brushes, eert-ain novel means for controlling the main brush and throwing it into operative position, said means permitting of placing this brush in operative connect-ion with 'the driving mechanism prior to contact with the ground, so that the shock incident to the starting operation will be reduced or eliminated.

A further object is to provide in a machine of the type above specified certain means for conveying the refuse-material to a suitable container', this means being operated pneumatically.

lilith the above and other objects in view, the invention consist-s in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claims.

In the accompanying drawings Figure 1 is a view in side elevation of a street sweeper constructed in accordance with the present invention, cert-ain of the parts being broken away, y

Fig. 2 is a view of the opposite side of the machine,

llig. 3 is a rear elevation of the machine,

Fig. el. is a longitudinal sectional view through the machine,

Fig. 5 is a cross sectional view through the forward portion of the machine, the section being taken on the line 5 5 of Fig. 4,

Fig. 6 is a view approximately on the line 6-6 of Fig. 3,

Fig. Y is an enlarged fragmentary view showing the clutch mechanism,

Fig. S is a similar view showing the controlling mechanism for the brushes and clutches.

Fig. 9 is a fragmentary view showing aA Referring now to the drawings in detail. 1 designates the main frame of the machine equipped, at its opposite ends, with front and rear axles 2 and 3 respectively. Loosely arranged upon the outer ends of the axles 2 and 3 are ground wheels e, while mounted upon the forward end of the main frame is a drivers seat 5 and arranged in juxtaposition to the scat is a steering column 6 suitably connected with the ground wheels onv the front axle *2 so that the machine may be steered. Arranged beneath the drivers seat is an internal combustion engine T connected by means of a drive shaft 8 with a cross shaft 9 arranged across the frame 1 behind the drivers seat and located at the point of connection with the drive shaft with the cross shaft is a differential gear set 10 whereby motion may be transmitted from the drive shaft to the cross shaft, in the usual well known manner. the cross shaft being divided into two axially alining sections to permit the differential gear to function. 0n the outer ends of the cross shaft 9 are sprocket pinions 11 while connected to the rear wheels concentrically of the rear axle are sprocket wheels 12 and trained over the corresponding pinions and Wheels 11 and 12 areendless chains 13 whereby motion may be transmit-- ted from the cross shaft to the rear wheels of the vehicle to propel the latter. The wheels on the rear axle 3 are capable of rotation around the axle and are adapted to be connected to the axle to rotate the latter. Secured to the innersides of the hubs of the wheels on the rear axle are clutch members 14 while splined upon the rear axle and adapted to engage the clutch members 14 respectively are clutch members 15. The clutch members 15 are under the control of bail members 16 and when the rods are operated in one direction the clutch members 15 engage the clutch members 14 to connect the rear wheels to the axle` while the rods are operated in the reverse direction when the members 15 are disengaged from the companion members 14 so that the rear wheels may revolve freely around the axle.

Secured to the side bars of the main frame l at the rear ends thereof and depending therefrom are vertical guides 17 and slidably mounted in the guides 17 are blocks 1S in which are -iournaled the ends of a horizontal shaft 19 carrying a main brush 20. The lower ends of the guides 17 are suitably braced as at 21. Depending from the tnnie l immediately in. ce lausli Q is e ieeepteele 2&5 im. ncljeoent to the emisli open and to tlie lonei tf-fell oit the 'leeeotw @en :23 miente@ to tlie operation the machiney 1 guide to on eet the iefuse bensi-i 2O i o tlie ieeeptuele l" mounted. i the ieeeptaele 22 is u 1 While eonnestefl to the tonnen-:l en@- o the ieeeptsole end pi'ojeeting upweiclly there from is @enduit Q5 lievi-ng tlie Lippen entl opening into e ietnse container mounted upon the znne l. The ien :2i is designed to blow the ieltuse through the conduit into the emit-einen1 26 in the oneifetion et the nieeliine. ii'engetl belenT ltlie e'oss shaft 9 i lioi'iziontal slinit and oonneetetl to tlie onte ends of the slnitt 2i' thyougli the medium of univeysel joints ere ouniliny brusli-eeiying sli et angle to tlie snuit 2i" mounted upon the slss" une suniliew oiuslies Tl e e et lo.L j nt `loing eine is and Y o i the hubs of mnslies 3G nie foinnetl with 'ti'ensvei'so gnomes 3l that aline lioles 50" in the outei ends oitlie shafts iespeetitely and tliough these elinin nel looies zuge @assoit ,7. l I pins 3l. tiles; sew it tlie outwern anote ment ot the lnusnes "while suriountli snats 29 sfleeent the innet ends oT the 3i. to liold the niuslies nen' limit o ente/*mtl inovementy loushes sniings normally et and @emitting oinslies to move in- Weitlly tn:l slant-ts in the event, ot

ontenenfls une bfi lies iubloing agg-ein the. ends stone obstacle. 4 "llie sl` 27 is rotatably' mounted in bemin/425s Yt une mounted upon e lense bound 0lenifiecl by the mein :transe l and suite ly suspended. therefrom. lloc-li -in'nlie y oiusli euiiyin shaft 29 is mounted in fing 29a pofcleei with outwardly @injecting lioiizontelly flis- -posed trunnions 29h pivotecl Within olocli 29C sliclebly mounted Within vertical guicles 29d flepending fiom the imm@ ot the inaolnne', es olezuly enen/n 1n Figs. 5 en@ 9 of the Cliewin js,

llinecl upon the fem eide 3 is i spur pinion meshing with n similar pinion 36 'ixecl upon 2L horizontal shaft 37 jonineled in the alining beefings eaiffiecl looA the temine l at the Tear end of the latten Keyed upon the shaft 37 adjacent one end thereof ae spoekets Wheels 38 enel fl'ouinelecl in bearings eeffniecl by the main :frame l above the cross shaft l0 is e tinnsvorse sli-Lift l0 und xed upon one enti of tlie slinitt t() is sprocket Wheel ll over nflnieli4^ and the sprocket Wheel 38 is trained endless elle e2 ufliefeby motion may oe tiensi 'ittetl tro the shaft 3'2" to the slint l1" the shafts l0 und i?? spiooliet 1 ot tne gear et c :t tls. l set is equipped with e spioolet Wheel ncl ovei the spoeltet Wheel L8 enel n snroc (et wheel e9 on the rslieit of the inn is ttninetl :i Chain Wlieieby the fan muy be involved at ielntively nigh speezl us competed with the rot-tion of tfl'ieslieft @n the end of the shaft Yi() remote from the sprocket eel el is sprocket Wheel 5l '.vlile nnen. noon the eoiiesponfling endl ot tlio slnift 19 ot the znziin bi'usli 20 is l n ese spioeltet e mein om n shalt thereby ievolvin einen. By ns of this cona i l lie eeen that unethe teni tlie nr .Yliels motion is int ed lii'oni i auxilio?? i the .fan a oling the yesose to be thrown into `ie ieeepmole and tlien flelii'ei'etl tothe eonteinec l'n owl-ei" to miese nml lov/ei the mein 1ousli 20 and operate the clutches eonti'olling the connection between the ieei axle and. the reet* Wheels7 Ti employ the following moelle,-

nisin:

lntenclino eofoss the rear en@L of the mein .fiaine gouinaletl in horizontally alining bearings is n yooli shaft. oel equipped Wit-li outmmlly projeeting mins eonneotecl thiougl medium ot links 56 with the blocks l5 so that in one direction the blools will be drawn upweiclly in the guides to elevete the lnusli, While in the revese movement ot the guicle shaft the blocks will loe moved tlowntmidly to lower the blocks. l pivote@ anni 5T having e laterally extending portion enge'e by atm 55 opemtes eeen oeil member lo through the medium of e lost motion eye Connection 58. Each oeil member lo is loingetlly mounteil et 16 intl controls one clutch member', being unclei the intluenee o e spring 16a acting on anni, 5i? 5 which letter is pivote et 5'4". The eye oonneetion pemits ,e given amount of lost motion between am 5'? and oeil l5. By of this lost motion connection the clutch members, sie engaged with eeen other to liive the loiusl'ies in the initial movement tlie seek sliett to lonen the main laiusll.Il tlieeloy enabling the brushes anti the 'fen to :tenen a, snitefole speed pevious to the ieaesa equipped with an that is connected with one/endl of a'. rod 62 projecting toward the front of the maehine and having the tera-ard ent y ierined with .rack meth @sh with a pinion shaft 55 and jour- The reak teeth 63 aisee upon e horizontal naledv in suitaioie bearings carried by a casing G8 fastened to the side of the main fra-me at the drivers seat. Also xed upony the shaft S5 and arranged side by side are ratchet wheeis 6? having opnositely disposed teeth, and e spur pinion I- kifulorunfied upon' the shaft '55 is a yol d. end 69 of e hand lever TO efs 'fried with manually ecntro'lied dog 71 th t normally engages the pinion 68. Alse pivoted upon the. shaft 65 is a iever 72 equipped with oppositely dis- -posed dogs 73 engagea'ole with the ratchet Wheels 57 respectively. By swinging the lever 7G backward and forward and engagdeg 7i with the pinion 58 in one direction. of movement of the lever and disengaging the dog from 'such pinion in the deposite direction of movement of the lever7 the shaft may be rotated te operate the rod the rock shaft (il and therod 60 to nieve the main brush 20 iu one direction, or the other according to the manner in which the dog Tl is engaged With the pinion and in order to prevent-retrograde move meut of the shaft one ci the dogs 73 connected to the lever 72 is engaged with the'- corresponding ratchet Wheel 67 so as to pre `vent backward movement or" the shaft during1 idle motion of the lever 70.

The rock shaft (5l is connected through a suitable link mechanism 7e with the blocks so that the latter may be drawn upmi uy to move the auxiliary brushes to iuactive position upon the raising of the main brush and lower them upon the lowering of the mein brush.

22 designates a suitable form of guard arranged Within the receptacle adjacent to the inlet and outlet openings thereof and this guard partially surrounds the fan so 'as to protect the latter against heavy par- .ifhile I have herein shown and described-`V one preferred form of my invention by. Way of illustration, I Wish it to he understood that. I de not limit or coniue rnysel te the precise details of construct-io described and delineated as mod and 'variation may he made ivi-t"v of the claims and without 15.131 the spirit of the invent-ieu.

i.. In a device of the brush shaft., a brush carri oy, ineens for driving said shaft. .roe-ans for ehenging the elevation tiieree and inea s ier starting the rotation of the hres it before the brush is in Contact with the surface of the roadway, said means last named including a rock shaft, an arm carried thereby, a spring held and pivotaliy mounted arm engaged by the arm first named, a clutch member, and meal for operating the latter from the spring arm and providing a limited degree of lost motion, a movable bearin for the brush shaft, and a rod Connected therewith, and With the' arm on the rock shaft.

2. In a device of the class deseribedj a frame work, amotor mounted therein, a shaftdriven by said motor, a brush shaft, movable bearings for mounting the brush embed, a

shaft, Wheels for supporting said frame, L

GEORGE V. LEHEiV.

t Prem 

